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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2011 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: ProvidesPropertyScanner.html 852 2014-03-19 16:40:39Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.dellroad.stuff.vaadin;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.lang.reflect.Method;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.util.ArrayList;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.util.Collections;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import java.util.Comparator;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import java.util.HashMap;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import java.util.List;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import java.util.Map;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import java.util.Set;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import org.dellroad.stuff.java.MethodAnnotationScanner;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import org.dellroad.stuff.java.Primitive;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>/**<a name="line.22"></a>
<span class="sourceLineNo">023</span> * Scans a Java class hierarchy for {@link ProvidesProperty &amp;#64;ProvidesProperty} and<a name="line.23"></a>
<span class="sourceLineNo">024</span> * {@link ProvidesPropertySort &amp;#64;ProvidesPropertySort} annotated getter methods and creates<a name="line.24"></a>
<span class="sourceLineNo">025</span> * a corresponding set of {@link PropertyDef} property definitions and a {@link SortingPropertyExtractor}<a name="line.25"></a>
<span class="sourceLineNo">026</span> * that will extract the properties from instances of the given class and sort them accordingly.<a name="line.26"></a>
<span class="sourceLineNo">027</span> *<a name="line.27"></a>
<span class="sourceLineNo">028</span> * @param &lt;T&gt; Java class to be introspected<a name="line.28"></a>
<span class="sourceLineNo">029</span> * @see ProvidesProperty &amp;#64;ProvidesProperty<a name="line.29"></a>
<span class="sourceLineNo">030</span> * @see ProvidesPropertySort &amp;#64;ProvidesPropertySort<a name="line.30"></a>
<span class="sourceLineNo">031</span> */<a name="line.31"></a>
<span class="sourceLineNo">032</span>public class ProvidesPropertyScanner&lt;T&gt; {<a name="line.32"></a>
<span class="sourceLineNo">033</span><a name="line.33"></a>
<span class="sourceLineNo">034</span>    private final ArrayList&lt;PropertyDef&lt;?&gt;&gt; propertyList = new ArrayList&lt;PropertyDef&lt;?&gt;&gt;();<a name="line.34"></a>
<span class="sourceLineNo">035</span>    private final SortingPropertyExtractor&lt;T&gt; propertyExtractor;<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span>    /**<a name="line.37"></a>
<span class="sourceLineNo">038</span>     * Constructor.<a name="line.38"></a>
<span class="sourceLineNo">039</span>     *<a name="line.39"></a>
<span class="sourceLineNo">040</span>     * @param type Java class to be introspected<a name="line.40"></a>
<span class="sourceLineNo">041</span>     * @throws IllegalArgumentException if {@code type} is null<a name="line.41"></a>
<span class="sourceLineNo">042</span>     * @throws IllegalArgumentException if an annotated method with no {@linkplain ProvidesProperty#value property name specified}<a name="line.42"></a>
<span class="sourceLineNo">043</span>     *  has a name which cannot be interpreted as a bean property "getter" method<a name="line.43"></a>
<span class="sourceLineNo">044</span>     * @throws IllegalArgumentException if {@code type} has two {@link ProvidesProperty &amp;#64;ProvidesProperty}-annotated<a name="line.44"></a>
<span class="sourceLineNo">045</span>     *  fields or methods with the same {@linkplain ProvidesProperty#value property name}<a name="line.45"></a>
<span class="sourceLineNo">046</span>     */<a name="line.46"></a>
<span class="sourceLineNo">047</span>    public ProvidesPropertyScanner(Class&lt;T&gt; type) {<a name="line.47"></a>
<span class="sourceLineNo">048</span><a name="line.48"></a>
<span class="sourceLineNo">049</span>        // Sanity check<a name="line.49"></a>
<span class="sourceLineNo">050</span>        if (type == null)<a name="line.50"></a>
<span class="sourceLineNo">051</span>            throw new IllegalArgumentException("null type");<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>        // Scan for @ProvidesProperty and @ProvidesPropertySort annotations<a name="line.53"></a>
<span class="sourceLineNo">054</span>        final Set&lt;MethodAnnotationScanner&lt;T, ProvidesProperty&gt;.MethodInfo&gt; providesPropertyMethods<a name="line.54"></a>
<span class="sourceLineNo">055</span>          = new MethodAnnotationScanner&lt;T, ProvidesProperty&gt;(type, ProvidesProperty.class).findAnnotatedMethods();<a name="line.55"></a>
<span class="sourceLineNo">056</span>        final Set&lt;MethodAnnotationScanner&lt;T, ProvidesPropertySort&gt;.MethodInfo&gt; providesPropertySortMethods<a name="line.56"></a>
<span class="sourceLineNo">057</span>          = new MethodAnnotationScanner&lt;T, ProvidesPropertySort&gt;(type, ProvidesPropertySort.class).findAnnotatedMethods();<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span>        // Check for duplicate @ProvidesProperty names<a name="line.59"></a>
<span class="sourceLineNo">060</span>        final HashMap&lt;String, MethodAnnotationScanner&lt;T, ProvidesProperty&gt;.MethodInfo&gt; providesPropertyNameMap<a name="line.60"></a>
<span class="sourceLineNo">061</span>          = new HashMap&lt;String, MethodAnnotationScanner&lt;T, ProvidesProperty&gt;.MethodInfo&gt;();<a name="line.61"></a>
<span class="sourceLineNo">062</span>        for (MethodAnnotationScanner&lt;T, ProvidesProperty&gt;.MethodInfo methodInfo : providesPropertyMethods) {<a name="line.62"></a>
<span class="sourceLineNo">063</span>            final String propertyName = this.getPropertyName(methodInfo);<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span>            // Check for name conflict<a name="line.65"></a>
<span class="sourceLineNo">066</span>            final MethodAnnotationScanner&lt;T, ProvidesProperty&gt;.MethodInfo previousInfo = providesPropertyNameMap.get(propertyName);<a name="line.66"></a>
<span class="sourceLineNo">067</span>            if (previousInfo == null) {<a name="line.67"></a>
<span class="sourceLineNo">068</span>                providesPropertyNameMap.put(propertyName, methodInfo);<a name="line.68"></a>
<span class="sourceLineNo">069</span>                continue;<a name="line.69"></a>
<span class="sourceLineNo">070</span>            }<a name="line.70"></a>
<span class="sourceLineNo">071</span><a name="line.71"></a>
<span class="sourceLineNo">072</span>            // If there is a name conflict, the sub-type method declaration wins<a name="line.72"></a>
<span class="sourceLineNo">073</span>            switch (this.compareDeclaringClass(previousInfo.getMethod(), methodInfo.getMethod())) {<a name="line.73"></a>
<span class="sourceLineNo">074</span>            case 0:<a name="line.74"></a>
<span class="sourceLineNo">075</span>                throw new IllegalArgumentException("duplicate @" + ProvidesProperty.class.getSimpleName()<a name="line.75"></a>
<span class="sourceLineNo">076</span>                  + " declaration for property `" + propertyName + "' on method " + previousInfo.getMethod()<a name="line.76"></a>
<span class="sourceLineNo">077</span>                  + " and " + methodInfo.getMethod() + " declared in the same class");<a name="line.77"></a>
<span class="sourceLineNo">078</span>            case 1:<a name="line.78"></a>
<span class="sourceLineNo">079</span>                providesPropertyNameMap.put(propertyName, methodInfo);<a name="line.79"></a>
<span class="sourceLineNo">080</span>                break;<a name="line.80"></a>
<span class="sourceLineNo">081</span>            default:<a name="line.81"></a>
<span class="sourceLineNo">082</span>                break;<a name="line.82"></a>
<span class="sourceLineNo">083</span>            }<a name="line.83"></a>
<span class="sourceLineNo">084</span>        }<a name="line.84"></a>
<span class="sourceLineNo">085</span><a name="line.85"></a>
<span class="sourceLineNo">086</span>        // Check for duplicate @ProvidesPropertySort names, etc.<a name="line.86"></a>
<span class="sourceLineNo">087</span>        final HashMap&lt;String, MethodAnnotationScanner&lt;T, ProvidesPropertySort&gt;.MethodInfo&gt; providesPropertySortNameMap<a name="line.87"></a>
<span class="sourceLineNo">088</span>          = new HashMap&lt;String, MethodAnnotationScanner&lt;T, ProvidesPropertySort&gt;.MethodInfo&gt;();<a name="line.88"></a>
<span class="sourceLineNo">089</span>        for (MethodAnnotationScanner&lt;T, ProvidesPropertySort&gt;.MethodInfo methodInfo : providesPropertySortMethods) {<a name="line.89"></a>
<span class="sourceLineNo">090</span>            final String propertyName = this.getSortPropertyName(methodInfo);<a name="line.90"></a>
<span class="sourceLineNo">091</span><a name="line.91"></a>
<span class="sourceLineNo">092</span>            // Verify the method's return type (or wrapper type if primitive) implements Comparable or Comparator<a name="line.92"></a>
<span class="sourceLineNo">093</span>            Class&lt;?&gt; methodType = methodInfo.getMethod().getReturnType();<a name="line.93"></a>
<span class="sourceLineNo">094</span>            if (methodType.isPrimitive())<a name="line.94"></a>
<span class="sourceLineNo">095</span>                methodType = Primitive.get(methodType).getWrapperType();<a name="line.95"></a>
<span class="sourceLineNo">096</span>            if (!Comparable.class.isAssignableFrom(methodType) &amp;&amp; !Comparator.class.isAssignableFrom(methodType)) {<a name="line.96"></a>
<span class="sourceLineNo">097</span>                throw new IllegalArgumentException("invalid @" + ProvidesPropertySort.class.getSimpleName()<a name="line.97"></a>
<span class="sourceLineNo">098</span>                  + " declaration for property `" + propertyName + "': method " + methodInfo.getMethod()<a name="line.98"></a>
<span class="sourceLineNo">099</span>                  + " return type " + methodType.getName() + " implements neither " + Comparable.class.getName()<a name="line.99"></a>
<span class="sourceLineNo">100</span>                  + " nor " + Comparator.class.getName());<a name="line.100"></a>
<span class="sourceLineNo">101</span>            }<a name="line.101"></a>
<span class="sourceLineNo">102</span><a name="line.102"></a>
<span class="sourceLineNo">103</span>            // Check for name conflict<a name="line.103"></a>
<span class="sourceLineNo">104</span>            final MethodAnnotationScanner&lt;T, ProvidesPropertySort&gt;.MethodInfo previousInfo<a name="line.104"></a>
<span class="sourceLineNo">105</span>              = providesPropertySortNameMap.get(propertyName);<a name="line.105"></a>
<span class="sourceLineNo">106</span>            if (previousInfo == null) {<a name="line.106"></a>
<span class="sourceLineNo">107</span>                providesPropertySortNameMap.put(propertyName, methodInfo);<a name="line.107"></a>
<span class="sourceLineNo">108</span>                continue;<a name="line.108"></a>
<span class="sourceLineNo">109</span>            }<a name="line.109"></a>
<span class="sourceLineNo">110</span><a name="line.110"></a>
<span class="sourceLineNo">111</span>            // If there is a name conflict, the sub-type method declaration wins<a name="line.111"></a>
<span class="sourceLineNo">112</span>            switch (this.compareDeclaringClass(previousInfo.getMethod(), methodInfo.getMethod())) {<a name="line.112"></a>
<span class="sourceLineNo">113</span>            case 0:<a name="line.113"></a>
<span class="sourceLineNo">114</span>                throw new IllegalArgumentException("duplicate @" + ProvidesPropertySort.class.getSimpleName()<a name="line.114"></a>
<span class="sourceLineNo">115</span>                  + " declaration for property `" + propertyName + "' on method " + previousInfo.getMethod()<a name="line.115"></a>
<span class="sourceLineNo">116</span>                  + " and " + methodInfo.getMethod() + " declared in the same class");<a name="line.116"></a>
<span class="sourceLineNo">117</span>            case 1:<a name="line.117"></a>
<span class="sourceLineNo">118</span>                providesPropertySortNameMap.put(propertyName, methodInfo);<a name="line.118"></a>
<span class="sourceLineNo">119</span>                break;<a name="line.119"></a>
<span class="sourceLineNo">120</span>            default:<a name="line.120"></a>
<span class="sourceLineNo">121</span>                break;<a name="line.121"></a>
<span class="sourceLineNo">122</span>            }<a name="line.122"></a>
<span class="sourceLineNo">123</span>        }<a name="line.123"></a>
<span class="sourceLineNo">124</span><a name="line.124"></a>
<span class="sourceLineNo">125</span>        // Build PropertyDef list<a name="line.125"></a>
<span class="sourceLineNo">126</span>        for (Map.Entry&lt;String, MethodAnnotationScanner&lt;T, ProvidesProperty&gt;.MethodInfo&gt; e : providesPropertyNameMap.entrySet()) {<a name="line.126"></a>
<span class="sourceLineNo">127</span>            final String propertyName = e.getKey();<a name="line.127"></a>
<span class="sourceLineNo">128</span>            final MethodAnnotationScanner&lt;T, ProvidesProperty&gt;.MethodInfo methodInfo = e.getValue();<a name="line.128"></a>
<span class="sourceLineNo">129</span><a name="line.129"></a>
<span class="sourceLineNo">130</span>            // Get property type<a name="line.130"></a>
<span class="sourceLineNo">131</span>            Class&lt;?&gt; propertyType = methodInfo.getMethod().getReturnType();<a name="line.131"></a>
<span class="sourceLineNo">132</span><a name="line.132"></a>
<span class="sourceLineNo">133</span>            // Get property default value<a name="line.133"></a>
<span class="sourceLineNo">134</span>            Object defaultValue = null;<a name="line.134"></a>
<span class="sourceLineNo">135</span>            if (propertyType.isPrimitive()) {<a name="line.135"></a>
<span class="sourceLineNo">136</span>                final Primitive&lt;?&gt; primitiveType = Primitive.get(propertyType);<a name="line.136"></a>
<span class="sourceLineNo">137</span>                defaultValue = primitiveType.getDefaultValue();<a name="line.137"></a>
<span class="sourceLineNo">138</span>                propertyType = primitiveType.getWrapperType();<a name="line.138"></a>
<span class="sourceLineNo">139</span>            }<a name="line.139"></a>
<span class="sourceLineNo">140</span><a name="line.140"></a>
<span class="sourceLineNo">141</span>            // Get sort property (if any)<a name="line.141"></a>
<span class="sourceLineNo">142</span>            final MethodAnnotationScanner&lt;T, ProvidesPropertySort&gt;.MethodInfo sortMethodInfo<a name="line.142"></a>
<span class="sourceLineNo">143</span>              = providesPropertySortNameMap.get(propertyName);<a name="line.143"></a>
<span class="sourceLineNo">144</span><a name="line.144"></a>
<span class="sourceLineNo">145</span>            // Create property definition<a name="line.145"></a>
<span class="sourceLineNo">146</span>            this.propertyList.add(this.createAnnotationPropertyDef(<a name="line.146"></a>
<span class="sourceLineNo">147</span>              propertyName, propertyType, defaultValue, methodInfo, sortMethodInfo));<a name="line.147"></a>
<span class="sourceLineNo">148</span>        }<a name="line.148"></a>
<span class="sourceLineNo">149</span><a name="line.149"></a>
<span class="sourceLineNo">150</span>        // Build PropertyExtractor<a name="line.150"></a>
<span class="sourceLineNo">151</span>        this.propertyExtractor = new SortingPropertyExtractor&lt;T&gt;() {<a name="line.151"></a>
<span class="sourceLineNo">152</span><a name="line.152"></a>
<span class="sourceLineNo">153</span>            @Override<a name="line.153"></a>
<span class="sourceLineNo">154</span>            @SuppressWarnings("unchecked")<a name="line.154"></a>
<span class="sourceLineNo">155</span>            public &lt;V&gt; V getPropertyValue(T obj, PropertyDef&lt;V&gt; propertyDef) {<a name="line.155"></a>
<span class="sourceLineNo">156</span>                if (!(propertyDef instanceof AnnotationPropertyDef))<a name="line.156"></a>
<span class="sourceLineNo">157</span>                    throw new RuntimeException("unknown property " + propertyDef);<a name="line.157"></a>
<span class="sourceLineNo">158</span>                final AnnotationPropertyDef&lt;V&gt; annotationPropertyDef = (AnnotationPropertyDef&lt;V&gt;)propertyDef;<a name="line.158"></a>
<span class="sourceLineNo">159</span>                return propertyDef.getType().cast(annotationPropertyDef.getMethodInfo().invoke(obj));<a name="line.159"></a>
<span class="sourceLineNo">160</span>            }<a name="line.160"></a>
<span class="sourceLineNo">161</span><a name="line.161"></a>
<span class="sourceLineNo">162</span>            @Override<a name="line.162"></a>
<span class="sourceLineNo">163</span>            @SuppressWarnings("unchecked")<a name="line.163"></a>
<span class="sourceLineNo">164</span>            public boolean canSort(PropertyDef&lt;?&gt; propertyDef) {<a name="line.164"></a>
<span class="sourceLineNo">165</span>                if (!(propertyDef instanceof AnnotationPropertyDef))<a name="line.165"></a>
<span class="sourceLineNo">166</span>                    return false;<a name="line.166"></a>
<span class="sourceLineNo">167</span>                final AnnotationPropertyDef&lt;?&gt; annotationPropertyDef = (AnnotationPropertyDef)propertyDef;<a name="line.167"></a>
<span class="sourceLineNo">168</span>                return annotationPropertyDef.getSortMethodInfo() != null;<a name="line.168"></a>
<span class="sourceLineNo">169</span>            }<a name="line.169"></a>
<span class="sourceLineNo">170</span><a name="line.170"></a>
<span class="sourceLineNo">171</span>            @Override<a name="line.171"></a>
<span class="sourceLineNo">172</span>            @SuppressWarnings("unchecked")<a name="line.172"></a>
<span class="sourceLineNo">173</span>            public int sort(PropertyDef&lt;?&gt; propertyDef, T obj1, T obj2) {<a name="line.173"></a>
<span class="sourceLineNo">174</span>                if (!(propertyDef instanceof AnnotationPropertyDef))<a name="line.174"></a>
<span class="sourceLineNo">175</span>                    throw new UnsupportedOperationException("unknown property " + propertyDef);<a name="line.175"></a>
<span class="sourceLineNo">176</span>                final AnnotationPropertyDef&lt;?&gt; annotationPropertyDef = (AnnotationPropertyDef&lt;?&gt;)propertyDef;<a name="line.176"></a>
<span class="sourceLineNo">177</span>                return annotationPropertyDef.getComparator().compare(obj1, obj2);<a name="line.177"></a>
<span class="sourceLineNo">178</span>            }<a name="line.178"></a>
<span class="sourceLineNo">179</span>        };<a name="line.179"></a>
<span class="sourceLineNo">180</span>    }<a name="line.180"></a>
<span class="sourceLineNo">181</span><a name="line.181"></a>
<span class="sourceLineNo">182</span>    /**<a name="line.182"></a>
<span class="sourceLineNo">183</span>     * Get the list of {@link PropertyDef}s generated from the annotated methods.<a name="line.183"></a>
<span class="sourceLineNo">184</span>     *<a name="line.184"></a>
<span class="sourceLineNo">185</span>     * &lt;p&gt;<a name="line.185"></a>
<span class="sourceLineNo">186</span>     * All of the properties in the returned list can be extracted from instances of this reader's configured<a name="line.186"></a>
<span class="sourceLineNo">187</span>     * class by the {@link PropertyExtractor} returned by {@link #getPropertyExtractor}.<a name="line.187"></a>
<span class="sourceLineNo">188</span>     * &lt;/p&gt;<a name="line.188"></a>
<span class="sourceLineNo">189</span>     *<a name="line.189"></a>
<span class="sourceLineNo">190</span>     * @return unmodifiable list of properties<a name="line.190"></a>
<span class="sourceLineNo">191</span>     * @see #getPropertyExtractor<a name="line.191"></a>
<span class="sourceLineNo">192</span>     */<a name="line.192"></a>
<span class="sourceLineNo">193</span>    public List&lt;PropertyDef&lt;?&gt;&gt; getPropertyDefs() {<a name="line.193"></a>
<span class="sourceLineNo">194</span>        return Collections.unmodifiableList(this.propertyList);<a name="line.194"></a>
<span class="sourceLineNo">195</span>    }<a name="line.195"></a>
<span class="sourceLineNo">196</span><a name="line.196"></a>
<span class="sourceLineNo">197</span>    /**<a name="line.197"></a>
<span class="sourceLineNo">198</span>     * Get the {@link PropertyExtractor} that extracts Vaadin {@link com.vaadin.data.Property} values<a name="line.198"></a>
<span class="sourceLineNo">199</span>     * from instances of the annotated class when given one of the {@link PropertyDef}s returned by<a name="line.199"></a>
<span class="sourceLineNo">200</span>     * {@link #getPropertyDefs}.<a name="line.200"></a>
<span class="sourceLineNo">201</span>     *<a name="line.201"></a>
<span class="sourceLineNo">202</span>     * @see #getPropertyDefs<a name="line.202"></a>
<span class="sourceLineNo">203</span>     */<a name="line.203"></a>
<span class="sourceLineNo">204</span>    public SortingPropertyExtractor&lt;T&gt; getPropertyExtractor() {<a name="line.204"></a>
<span class="sourceLineNo">205</span>        return this.propertyExtractor;<a name="line.205"></a>
<span class="sourceLineNo">206</span>    }<a name="line.206"></a>
<span class="sourceLineNo">207</span><a name="line.207"></a>
<span class="sourceLineNo">208</span>    private String getPropertyName(MethodAnnotationScanner&lt;T, ProvidesProperty&gt;.MethodInfo methodInfo) {<a name="line.208"></a>
<span class="sourceLineNo">209</span>        return methodInfo.getAnnotation().value().length() &gt; 0 ?<a name="line.209"></a>
<span class="sourceLineNo">210</span>          methodInfo.getAnnotation().value() : methodInfo.getMethodPropertyName();<a name="line.210"></a>
<span class="sourceLineNo">211</span>    }<a name="line.211"></a>
<span class="sourceLineNo">212</span><a name="line.212"></a>
<span class="sourceLineNo">213</span>    private String getSortPropertyName(MethodAnnotationScanner&lt;T, ProvidesPropertySort&gt;.MethodInfo methodInfo) {<a name="line.213"></a>
<span class="sourceLineNo">214</span>        return methodInfo.getAnnotation().value().length() &gt; 0 ?<a name="line.214"></a>
<span class="sourceLineNo">215</span>          methodInfo.getAnnotation().value() : methodInfo.getMethodPropertyName();<a name="line.215"></a>
<span class="sourceLineNo">216</span>    }<a name="line.216"></a>
<span class="sourceLineNo">217</span><a name="line.217"></a>
<span class="sourceLineNo">218</span>    // This method exists solely to bind the generic type<a name="line.218"></a>
<span class="sourceLineNo">219</span>    private &lt;V&gt; AnnotationPropertyDef&lt;V&gt; createAnnotationPropertyDef(String propertyName, Class&lt;V&gt; propertyType,<a name="line.219"></a>
<span class="sourceLineNo">220</span>      Object defaultValue, MethodAnnotationScanner&lt;T, ProvidesProperty&gt;.MethodInfo methodInfo,<a name="line.220"></a>
<span class="sourceLineNo">221</span>      MethodAnnotationScanner&lt;T, ProvidesPropertySort&gt;.MethodInfo sortMethodInfo) {<a name="line.221"></a>
<span class="sourceLineNo">222</span>        return new AnnotationPropertyDef&lt;V&gt;(propertyName, propertyType,<a name="line.222"></a>
<span class="sourceLineNo">223</span>          propertyType.cast(defaultValue), methodInfo, sortMethodInfo);<a name="line.223"></a>
<span class="sourceLineNo">224</span>    }<a name="line.224"></a>
<span class="sourceLineNo">225</span><a name="line.225"></a>
<span class="sourceLineNo">226</span>    // Compare two methods to determine which one has the declaring class that is a sub-type of the other's<a name="line.226"></a>
<span class="sourceLineNo">227</span>    private int compareDeclaringClass(Method method1, Method method2) {<a name="line.227"></a>
<span class="sourceLineNo">228</span>        final Class&lt;?&gt; class1 = method1.getDeclaringClass();<a name="line.228"></a>
<span class="sourceLineNo">229</span>        final Class&lt;?&gt; class2 = method2.getDeclaringClass();<a name="line.229"></a>
<span class="sourceLineNo">230</span>        if (class1 == class2)<a name="line.230"></a>
<span class="sourceLineNo">231</span>            return 0;<a name="line.231"></a>
<span class="sourceLineNo">232</span>        if (class1.isAssignableFrom(class2))<a name="line.232"></a>
<span class="sourceLineNo">233</span>            return 1;<a name="line.233"></a>
<span class="sourceLineNo">234</span>        if (class2.isAssignableFrom(class1))<a name="line.234"></a>
<span class="sourceLineNo">235</span>            return -1;<a name="line.235"></a>
<span class="sourceLineNo">236</span>        throw new RuntimeException("internal error: incomparable classes " + class1.getName() + " and " + class2.getName());<a name="line.236"></a>
<span class="sourceLineNo">237</span>    }<a name="line.237"></a>
<span class="sourceLineNo">238</span><a name="line.238"></a>
<span class="sourceLineNo">239</span>    private class AnnotationPropertyDef&lt;V&gt; extends PropertyDef&lt;V&gt; {<a name="line.239"></a>
<span class="sourceLineNo">240</span><a name="line.240"></a>
<span class="sourceLineNo">241</span>        private final MethodAnnotationScanner&lt;T, ProvidesProperty&gt;.MethodInfo methodInfo;<a name="line.241"></a>
<span class="sourceLineNo">242</span>        private final MethodAnnotationScanner&lt;T, ProvidesPropertySort&gt;.MethodInfo sortMethodInfo;<a name="line.242"></a>
<span class="sourceLineNo">243</span><a name="line.243"></a>
<span class="sourceLineNo">244</span>        private Comparator&lt;T&gt; comparator;<a name="line.244"></a>
<span class="sourceLineNo">245</span><a name="line.245"></a>
<span class="sourceLineNo">246</span>        AnnotationPropertyDef(String name, Class&lt;V&gt; type, V defaultValue,<a name="line.246"></a>
<span class="sourceLineNo">247</span>          MethodAnnotationScanner&lt;T, ProvidesProperty&gt;.MethodInfo methodInfo,<a name="line.247"></a>
<span class="sourceLineNo">248</span>          MethodAnnotationScanner&lt;T, ProvidesPropertySort&gt;.MethodInfo sortMethodInfo) {<a name="line.248"></a>
<span class="sourceLineNo">249</span>            super(name, type, defaultValue);<a name="line.249"></a>
<span class="sourceLineNo">250</span>            this.methodInfo = methodInfo;<a name="line.250"></a>
<span class="sourceLineNo">251</span>            this.sortMethodInfo = sortMethodInfo;<a name="line.251"></a>
<span class="sourceLineNo">252</span>        }<a name="line.252"></a>
<span class="sourceLineNo">253</span><a name="line.253"></a>
<span class="sourceLineNo">254</span>        public MethodAnnotationScanner&lt;T, ProvidesProperty&gt;.MethodInfo getMethodInfo() {<a name="line.254"></a>
<span class="sourceLineNo">255</span>            return this.methodInfo;<a name="line.255"></a>
<span class="sourceLineNo">256</span>        }<a name="line.256"></a>
<span class="sourceLineNo">257</span><a name="line.257"></a>
<span class="sourceLineNo">258</span>        public MethodAnnotationScanner&lt;T, ProvidesPropertySort&gt;.MethodInfo getSortMethodInfo() {<a name="line.258"></a>
<span class="sourceLineNo">259</span>            return this.sortMethodInfo;<a name="line.259"></a>
<span class="sourceLineNo">260</span>        }<a name="line.260"></a>
<span class="sourceLineNo">261</span><a name="line.261"></a>
<span class="sourceLineNo">262</span>        public Comparator&lt;T&gt; getComparator() {<a name="line.262"></a>
<span class="sourceLineNo">263</span><a name="line.263"></a>
<span class="sourceLineNo">264</span>            // Sanity check<a name="line.264"></a>
<span class="sourceLineNo">265</span>            if (this.sortMethodInfo == null)<a name="line.265"></a>
<span class="sourceLineNo">266</span>                throw new UnsupportedOperationException("can't sort property " + this);<a name="line.266"></a>
<span class="sourceLineNo">267</span><a name="line.267"></a>
<span class="sourceLineNo">268</span>            // Already created?<a name="line.268"></a>
<span class="sourceLineNo">269</span>            if (this.comparator != null)<a name="line.269"></a>
<span class="sourceLineNo">270</span>                return this.comparator;<a name="line.270"></a>
<span class="sourceLineNo">271</span><a name="line.271"></a>
<span class="sourceLineNo">272</span>            // Handle Comparator case<a name="line.272"></a>
<span class="sourceLineNo">273</span>            if (Comparator.class.isAssignableFrom(this.sortMethodInfo.getMethod().getReturnType())) {<a name="line.273"></a>
<span class="sourceLineNo">274</span>                this.comparator = new Comparator&lt;T&gt;() {<a name="line.274"></a>
<span class="sourceLineNo">275</span><a name="line.275"></a>
<span class="sourceLineNo">276</span>                    private Comparator&lt;T&gt; comparator;<a name="line.276"></a>
<span class="sourceLineNo">277</span><a name="line.277"></a>
<span class="sourceLineNo">278</span>                    @Override<a name="line.278"></a>
<span class="sourceLineNo">279</span>                    @SuppressWarnings("unchecked")<a name="line.279"></a>
<span class="sourceLineNo">280</span>                    public int compare(T obj1, T obj2) {<a name="line.280"></a>
<span class="sourceLineNo">281</span>                        if (this.comparator == null)<a name="line.281"></a>
<span class="sourceLineNo">282</span>                            this.comparator = (Comparator&lt;T&gt;)AnnotationPropertyDef.this.sortMethodInfo.invoke(obj1);<a name="line.282"></a>
<span class="sourceLineNo">283</span>                        return this.comparator.compare(obj1, obj2);<a name="line.283"></a>
<span class="sourceLineNo">284</span>                    }<a name="line.284"></a>
<span class="sourceLineNo">285</span>                };<a name="line.285"></a>
<span class="sourceLineNo">286</span>                return this.comparator;<a name="line.286"></a>
<span class="sourceLineNo">287</span>            }<a name="line.287"></a>
<span class="sourceLineNo">288</span><a name="line.288"></a>
<span class="sourceLineNo">289</span>            // Handle Comparable case<a name="line.289"></a>
<span class="sourceLineNo">290</span>            this.comparator = new Comparator&lt;T&gt;() {<a name="line.290"></a>
<span class="sourceLineNo">291</span>                @Override<a name="line.291"></a>
<span class="sourceLineNo">292</span>                @SuppressWarnings("unchecked")<a name="line.292"></a>
<span class="sourceLineNo">293</span>                public int compare(T obj1, T obj2) {<a name="line.293"></a>
<span class="sourceLineNo">294</span>                    final Comparable&lt;Object&gt; value1 = (Comparable&lt;Object&gt;)AnnotationPropertyDef.this.sortMethodInfo.invoke(obj1);<a name="line.294"></a>
<span class="sourceLineNo">295</span>                    final Comparable&lt;Object&gt; value2 = (Comparable&lt;Object&gt;)AnnotationPropertyDef.this.sortMethodInfo.invoke(obj2);<a name="line.295"></a>
<span class="sourceLineNo">296</span>                    if (value1 == null &amp;&amp; value2 != null)<a name="line.296"></a>
<span class="sourceLineNo">297</span>                        return -1;<a name="line.297"></a>
<span class="sourceLineNo">298</span>                    if (value1 != null &amp;&amp; value2 == null)<a name="line.298"></a>
<span class="sourceLineNo">299</span>                        return 1;<a name="line.299"></a>
<span class="sourceLineNo">300</span>                    if (value1 == null &amp;&amp; value2 == null)<a name="line.300"></a>
<span class="sourceLineNo">301</span>                        return 0;<a name="line.301"></a>
<span class="sourceLineNo">302</span>                    return value1.compareTo(value2);<a name="line.302"></a>
<span class="sourceLineNo">303</span>                }<a name="line.303"></a>
<span class="sourceLineNo">304</span>            };<a name="line.304"></a>
<span class="sourceLineNo">305</span>            return this.comparator;<a name="line.305"></a>
<span class="sourceLineNo">306</span>        }<a name="line.306"></a>
<span class="sourceLineNo">307</span>    }<a name="line.307"></a>
<span class="sourceLineNo">308</span>}<a name="line.308"></a>
<span class="sourceLineNo">309</span><a name="line.309"></a>




























































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